I got three of these from craigs list, they were dirty, old and in terrible shape. So I was trying to remove everything to reseal everything back up. I did one with no issues, tried taking apart my other one, and pulled too hard without scraping everything fully. And BAM. Exploded all over the place. Just glad I didn't cut myself. Already got a new section cut out. I'll be replacing it after hamburg.
Ouch! Glad you're OK. At least they're mostly big pieces. Easier to clean up. I once tried cutting a piece of glass that turned out to be tempered. It ended in a shower of little glass pieces flying everywhere.
Definately looks like a good starting point for something new. Keep us posted as to what you end up doing with it.